Yokomo YOKYS650 Silicone Shock Oil - Super Blend 650 cSt  [YOKYS650]

Fine-tune compression and rebound for 1/10 models

The Yokomo YOKYS650 Super Blend Shock Oil #650 is a silicone-based damping fluid formulated for RC-scale shock absorbers and damper assemblies. As a dedicated shock oil, it influences compression and rebound behaviour without changing spring rates, giving you a predictable range for setup work on 1/10 scale touring cars, buggies and similar models.

In use it serves three practical roles: providing consistent damping characteristics across temperature ranges, lubricating internal shock components to reduce friction and wear, and helping maintain stable ride height and traction when you adjust piston, shim or spring settings. The "650" designation corresponds to a numeric viscosity grade commonly used in RC tuning; this oil sits in the mid-to-heavy range for those targeting firmer damping.

Installation notes: drain or service dampers on a clean bench, inspect seals and O-rings for damage before refilling, and work slowly to remove trapped air for consistent performance. Small volume changes produce noticeable effects on damping feel, so make incremental adjustments when switching viscosities.